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Btrfs: autodetect SSD devices

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During mount, btrfs will check the queue nonrot flag
for all the devices found in the FS.  If they are all
non-rotating, SSD mode is enabled by default.

If the FS was mounted with -o nossd, the non-rotating
flag is ignored.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2009-06-10 09:51:32 -04:00
commit c289811cc0
5 changed files with 24 additions and 0 deletions
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